LCD Registers: Difference between revisions
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Other registers that used to be documented on this page are now at [[GPU Registers]]. | |||
= Registers = | |||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
! NAME | ! NAME | ||
Line 7: | Line 9: | ||
! WIDTH | ! WIDTH | ||
|- | |- | ||
| | | Parallax barrier enable | ||
| | | 0x10202000 | ||
| | | 0x1ED02000 | ||
| | | 0xFFFD6000 | ||
| | | 0x4 | ||
|- | |||
| Parallax barrier PWM | |||
| 0x10202004 | |||
| 0x1ED02004 | |||
| 0xFFFD6004 | |||
| 0x4 | |||
|- | |||
| LCD status | |||
| 0x10202008 | |||
| 0x1ED02008 | |||
| 0xFFFD6008 | |||
| 0x4 | |||
|- | |||
| LCD clock disable | |||
| 0x1020200C | |||
| 0x1ED0200C | |||
| 0xFFFD600C | |||
| 0x4 | |||
|- | |||
| ? | |||
| 0x10202010 | |||
| 0x1ED02010 | |||
| 0xFFFD6010 | |||
| 0x4 | |||
|- | |||
| LCD reset | |||
| 0x10202014 | |||
| 0x1ED02014 | |||
| 0xFFFD6014 | |||
| 0x4 | |||
|- | |||
| Top Screen [[#LCD Configuration|LCD Configuration]] | |||
| 0x10202200 | |||
| 0x1ED02200 | |||
| 0xFFFD6200 | |||
| 0x600 | |||
|- | |||
| Bottom Screen [[#LCD Configuration|LCD Configuration]] | |||
| 0x10202A00 | |||
| 0x1ED02A00 | |||
| 0xFFFD6A00 | |||
| 0x600 | |||
|- | |||
| ? | |||
| 0x10203200 | |||
| 0x1ED03200 | |||
| 0xFFFD7200 | |||
| 0x40 | |||
|} | |||
On screen-init (error screen), Boot11 sets 0x10202004 to 0xA390A39. | |||
== LCD Configuration == | |||
{| class="wikitable" border="1" | |||
! Offset | |||
! Size | |||
! Description | |||
|- | |||
| 0x00 | |||
| 0x4 | |||
| [[#Flags|Flags]] | |||
|- | |||
| 0x04 | |||
| 0x4 | |||
| [[#Fill Color|Fill Color]] | |||
|- | |||
| 0x10 | |||
| 0x10 | |||
| [[#ABL Area|ABL Area]] | |||
|- | |||
| 0x20 | |||
| 0x4 | |||
| GTH Ratio | |||
|- | |||
| 0x24 | |||
| 0x4 | |||
| Min GTH | |||
|- | |||
| 0x28 | |||
| 0x4 | |||
| MinMax | |||
|- | |||
| 0x2C | |||
| 0x4 | |||
| ExMax | |||
|- | |||
| 0x30 | |||
| 0x4 | |||
| Inertia | |||
|- | |||
| 0x38 | |||
| 0x4 | |||
| MinRS | |||
|- | |||
| 0x3C | |||
| 0x4 | |||
| MaxRS | |||
|- | |||
| 0x40 | |||
| 0x4 | |||
| [[#Backlight Level|Backlight Level]] | |||
|- | |||
| 0x44 | |||
| 0x4 | |||
| [[#Backlight Interval|Backlight Interval]] | |||
|- | |||
| 0x60 | |||
| 0x20 | |||
| Dither | |||
|- | |||
| 0x80 | |||
| 0x24 | |||
| LutListRS | |||
|- | |||
| 0xF0 | |||
| 0x0C | |||
| ? | |||
|- | |||
| 0x100 | |||
| 0x100 | |||
| LCD calibration data, pulled from nand:/ro/sys/HWCAL0.dat offset 0x77C. | |||
N3DS only. This area on old3DS is zero-filled and not writable. | |||
|- | |- | ||
| | | 0x200 | ||
| | | 0x400 | ||
| | | ? | ||
|} | |} | ||
=== Flags === | |||
{| class="wikitable" border="1" | |||
! Bit | |||
! Description | |||
|- | |||
| 0 | |||
| ABL on | |||
|- | |||
| 8 | |||
| ? | |||
|- | |||
| 9 | |||
| ? | |||
|} | |||
== | Bits 8 and 9 control dither. | ||
=== Fill Color === | |||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
! Bit | ! Bit | ||
Line 38: | Line 175: | ||
| 24 | | 24 | ||
| Enable | | Enable | ||
|} | |} | ||
When the enable bit is set, the specified solid color is displayed on the LCD instead of the framebuffer. | When the enable bit is set, the specified solid color is displayed on the LCD instead of the framebuffer. | ||
== | === ABL Area === | ||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
! | ! Offset | ||
! Description | ! Description | ||
|- | |- | ||
| | | 0x00 | ||
| | | X begin | ||
|- | |||
| 0x04 | |||
| X end | |||
|- | |||
| 0x08 | |||
| Y begin | |||
|- | |- | ||
| | | 0x0C | ||
| | | Y end | ||
|} | |} | ||
The values refer to 90° clockwise rotated screens. | |||
== | === Backlight Level === | ||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
! Bit | ! Bit | ||
! Description | ! Description | ||
|- | |- | ||
| 0 | | 9-0 | ||
| | | Backlight PWM duty on (0 = off) | ||
|} | |} | ||
== | === Backlight Interval === | ||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
! Bit | ! Bit | ||
! Description | ! Description | ||
|- | |- | ||
| | | 9-0 | ||
| | | Backlight PWM Interval, minus 1 | ||
|- | |- | ||
| | | 16 | ||
| | | Enable LCD (0 = disabled, 1 = enabled). | ||
== | |||
|- | |- | ||
| | | 17 | ||
| | | RS on (?) | ||
|- | |- | ||
| | | 18 | ||
| | | ? | ||
|} | |} | ||
On old 2DS, disabling the top LCD does nothing, disabling the bottom LCD affects both screens. | |||
Setting bit 18 makes the screen darker. | |||